Said to be for a single, large-screen device, it is unclear which product Microsoft is targeting, though the Surface Hub 2 running Windows 10X comes to mind. That version of the product itself has, of course, run into developmental difficulties, likely for the same reason.

There also appears to be a version for small-screened Windows 10X single-screen devices.

Of course, Microsoft may be looking at releasing a laptop or tablet running the OS, and we will have to wait and see what Microsoft comes up with.